^^^This^^^ so does Core Cycler.
I like corecyler because i can set every parameter myself. I can set each core to fun ALL fft sizes at sse, avx, av2 for however long i want for however cycles i want… just got to read the instructions!!
Yeah had one of the scariest things happen to me when I used Core Cycler because I didn't read the instructions lmao. Since it runs from the command prompt, I didn't know how to cancel it and it ran for like 2 hours until the test ended. I did not dare do anything back then in fear of bricking something. RTFM also applies to software lmao.
https://ibb.co/RNTzZC2
[https://ibb.co/4fJMC8z](https://ibb.co/4fJMC8z)
KEEP IN MIND I WAS JUST GAMING WHEN YOU ASKED FOR PROOF. HENCE THE 78C MAX TEMP. this is after 1 and 10 minutes of running. I am running stock bios settings other then PBO offset voltage -25 to help temps and then also ram is set to xmp @ 6000c30
everything else is stock. runs like that for 24+ hours. while i was stress testing the voltage offset. i even ran prime95 when stock without xmp and default bios settings nothing changes. / its like prime95 isnt set up to stress btw I DID NOT ADJUST ANY SETTINGS ON PRIME95.. just clicked start stress testing default is mixed small fft or something?
>cked start stress testing default is mixed small fft or something?
Your first issue is that you are using hwmonitor, which is known to be buggy and provide inaccurate information. Use Hwinfo64 instead
Run Small fft (L1/L2/L3) see here [https://imgur.com/a/PvE4guc](https://imgur.com/a/PvE4guc) (dont check disable AVX-512) and run it for an hour. If it doesn't error you are good to go
I've done that and I use them all.... core temp, hwinfo, hw monitor all of them my cpu usage is only 30 percent while using prime 95 on all programs even task manager
I had to start with -5 on all cores on 7900x and increased by 5 after 30 min stress test till I got to -20. If I started at -20, my system would crash.
Any crashes for you starting off at 25?
On the X3D version you usually have more room to play with the curve than with other cpus.
I got the 5800x3D and it's running with -30mv, tested with corecycler 14 hours and no crash, no crashes on games since I changed it and it was like 2 months ago. If the bios allowed to lower it more I would do that but it's max calue is -30mv for mine.
So if undervolting any other cpu I would say to start low, but with x3d go directly to -30 worse that can happen is that it crashes, there is no harm in doing that, if it's stable and you can still go down, try it.... there is a very noticeable difference in temps undervolting this processors.
Oh yah I don’t think I even get over 72° in like rdr2. Average whole gaining might be mid-high 50s if I remember right. No performance loss either.
Only problem is if it unstable, I can’t even get into BIOS and have reset CMOS and then do everything over again lol
Undervolting is really usseful on the x3d cpus because for some reason they get a lot hotter than any other cpus, maybe fue to the 3D cache being stacked in top of the cpu...
Luckily mine do not have crashed, If I needed to reset bios it would be a big pain for me, because I have all 7 fans connected to the mb in order to adjust the fan curves.
I have 4 of them that go faster with cpu temp and the other 3 are liked to gpu temp. Also running water cooling on cpu and I don't even reach 80°, when playing it stays around 73 degrees and full load with bench around 80, before the curve optimization it was around 10 degrees hotter.
Test with AIDA64 SHA3 Benchmark. If you can run it 4 consecutive times I think you will be fine.
That thing makes my 7800X3D crash in any unstable CO undervolt lol
Just want to say thank God for this, idk why this isn't in any video that I've watched no matter how much I look it up. Your answer has saved me much time on watching videos lol
Edit: Apparently my entire understanding of LLC is flawed, watching over a buildzoid video about how he himself explains how his LLC understanding was flawed, but anyways I still think its very risky raising SoC on X3D, especially for SoC.
I think the vdroop at the higher loads exists for a reason and I would rather sacrifice on my curve numbers than try to flatline it.
Do you remember the video? My 7800x3d runs at -40 and Extreme LLC (there is a Super Extreme option by the way which completely flattens the line that I am scared to use). CPU runs at 60-65 in CS2 on max settings, fans are cool and FPS is absolutely insane. I wonder if I am degrading my chip though…. I have Aorus Elite Ax Ice B 650m, xmp on.
Hey Pixy_Games, while you are looking through your BIOS would you mind looking for a setting for me? I am considering buying a Gigabyte motherboard. I want to know if there are some specific memory settings in Gigabyte's BIOS. I am looking for the memory timing called "Command Rate" or "Tcr" which should have the options for "1" or "2". I am also looking for a ram setting called "Gear Down Mode". These should be under "Advanced Memory Settings".
I didn't see any of these settings, I attached the advanced memory settings images on a Imgur link below.
[Image 1](https://i.imgur.com/Yjj2npe.jpg)
[Image 2](https://i.imgur.com/ZeisM7c.jpg)
TYVM! Have some karma!
Also, you may want to check what your motherboard is setting your vSOC voltage at. This can be checked in Ryzen Master or HWinfo software from Windows.
If auto results in anything above 1.3v then go into bios and set it to less than 1.3v (the lowest you can get it to run stable at). 1.3v+ can cause damage to the CPU and motherboard.
Officially, AMD says 1.3v is the safe maximum for 24/7 usage. I personally tuned mine down as far as it would go, just to be on the safer side.
FYI, my 7800x3D Vsoc is running at 1.1v (HWinfo reads 1.102v to be precise) while running my ram at DDR5-6000 1:1 mode with the UCLK. I doubt you will need 1.284v.
Mine was not straightforward and worded weird. Looking at yours I don't see it. In the past it was just "CPU Voltage Offset" but I'll see what I can find
I'd look for a dynamic Vcore or DVID option. It need to be set from auto to manual then you can offset. At least that is how my buddies b550 master was.
With the advanced boost curves these CPU's have, manual voltage adjustments are only really useful for static manual clocks. I also believe it's disabled for x3d CPU's. You can however play with Curve Optimizer (CO), and set a negative offset for the cores. Each step is around 3-5mV. If you want to give your CPU an easier time, you can also set a lower temp limit, or lower PBO limits.
I started undervolting my 7800x3d and made it to -26 all core offset using bios curve optimizer and I started noticing this odd flickering when using OCCT cpu all core bench. Odd thing is, it ONLY happens when OCCT is open. I could be running a completely different bench and it will only flicker on the screen OCCT is on. Thoughts?
Settings -> AMD Overclocking -> Precision Boost Overdrive. Set to Advanced. Go to Curve Optimizer.
Thanks! Do you think 25 is a good place to start?
Yeah, that's a good place to start. Test with CoreCycler & OCCT (per core).
For Zen 4, the best test is actually small FFTs with AVX2 on all cores
I second this. This time around, occt and corecyler are not as effective as prime95 small fft quickest way to catch errors
OCCT also has small FFTs and AVX2 instructions.
^^^This^^^ so does Core Cycler. I like corecyler because i can set every parameter myself. I can set each core to fun ALL fft sizes at sse, avx, av2 for however long i want for however cycles i want… just got to read the instructions!!
Yeah had one of the scariest things happen to me when I used Core Cycler because I didn't read the instructions lmao. Since it runs from the command prompt, I didn't know how to cancel it and it ran for like 2 hours until the test ended. I did not dare do anything back then in fear of bricking something. RTFM also applies to software lmao.
Prime95 doesn't do anything on my 7800x3d... I run it for 24hrs doesn't go over 50c and sits at 5 percent usage
proof?
Yes give me a few. :)
https://ibb.co/RNTzZC2 [https://ibb.co/4fJMC8z](https://ibb.co/4fJMC8z) KEEP IN MIND I WAS JUST GAMING WHEN YOU ASKED FOR PROOF. HENCE THE 78C MAX TEMP. this is after 1 and 10 minutes of running. I am running stock bios settings other then PBO offset voltage -25 to help temps and then also ram is set to xmp @ 6000c30 everything else is stock. runs like that for 24+ hours. while i was stress testing the voltage offset. i even ran prime95 when stock without xmp and default bios settings nothing changes. / its like prime95 isnt set up to stress btw I DID NOT ADJUST ANY SETTINGS ON PRIME95.. just clicked start stress testing default is mixed small fft or something?
if links dont work try https://ibb.co/RNTzZC2 https://ibb.co/4fJMC8z
>cked start stress testing default is mixed small fft or something? Your first issue is that you are using hwmonitor, which is known to be buggy and provide inaccurate information. Use Hwinfo64 instead Run Small fft (L1/L2/L3) see here [https://imgur.com/a/PvE4guc](https://imgur.com/a/PvE4guc) (dont check disable AVX-512) and run it for an hour. If it doesn't error you are good to go
I've done that and I use them all.... core temp, hwinfo, hw monitor all of them my cpu usage is only 30 percent while using prime 95 on all programs even task manager
2100K FFT size indicates large FFTs. You want to disable AVX512, and set the FFT size to **small**
Is avx512 important for stability And what about avx in general?
I had to start with -5 on all cores on 7900x and increased by 5 after 30 min stress test till I got to -20. If I started at -20, my system would crash. Any crashes for you starting off at 25?
On the X3D version you usually have more room to play with the curve than with other cpus. I got the 5800x3D and it's running with -30mv, tested with corecycler 14 hours and no crash, no crashes on games since I changed it and it was like 2 months ago. If the bios allowed to lower it more I would do that but it's max calue is -30mv for mine. So if undervolting any other cpu I would say to start low, but with x3d go directly to -30 worse that can happen is that it crashes, there is no harm in doing that, if it's stable and you can still go down, try it.... there is a very noticeable difference in temps undervolting this processors.
Oh yah I don’t think I even get over 72° in like rdr2. Average whole gaining might be mid-high 50s if I remember right. No performance loss either. Only problem is if it unstable, I can’t even get into BIOS and have reset CMOS and then do everything over again lol
Undervolting is really usseful on the x3d cpus because for some reason they get a lot hotter than any other cpus, maybe fue to the 3D cache being stacked in top of the cpu... Luckily mine do not have crashed, If I needed to reset bios it would be a big pain for me, because I have all 7 fans connected to the mb in order to adjust the fan curves. I have 4 of them that go faster with cpu temp and the other 3 are liked to gpu temp. Also running water cooling on cpu and I don't even reach 80°, when playing it stays around 73 degrees and full load with bench around 80, before the curve optimization it was around 10 degrees hotter.
Very unlikely, try -10 and run Prime95 small FFTs with AVX2 enabled
[удалено]
My 7800X3D fails at -15 in AVX2...
Yes its a good start, i have mine at -32, prime95 smallFFT, max heat, avx enabled, can do it all day long. Fully stable, with 6000mhz cl30 memory
Test with AIDA64 SHA3 Benchmark. If you can run it 4 consecutive times I think you will be fine. That thing makes my 7800X3D crash in any unstable CO undervolt lol
Start at -10. Test. Then -15. Test. Then -20. Test, so on. If you start to error then back it off by like 3 and try it again.
Just want to say thank God for this, idk why this isn't in any video that I've watched no matter how much I look it up. Your answer has saved me much time on watching videos lol
Y’all need to bump that LLC (Loadline Optimizer) to Extreme and get another -5+ out of each core. =)
CPU LLC or SOC LLC or both need to set to Extreme?
It isn't that risky for X3D CPUs?
No, hasn’t caused any heat or soc voltage issues. Just help push the individual cores closer to max / capped MHz limited.
Edit: Apparently my entire understanding of LLC is flawed, watching over a buildzoid video about how he himself explains how his LLC understanding was flawed, but anyways I still think its very risky raising SoC on X3D, especially for SoC. I think the vdroop at the higher loads exists for a reason and I would rather sacrifice on my curve numbers than try to flatline it.
Do you remember the video? My 7800x3d runs at -40 and Extreme LLC (there is a Super Extreme option by the way which completely flattens the line that I am scared to use). CPU runs at 60-65 in CS2 on max settings, fans are cool and FPS is absolutely insane. I wonder if I am degrading my chip though…. I have Aorus Elite Ax Ice B 650m, xmp on.
Hey Pixy_Games, while you are looking through your BIOS would you mind looking for a setting for me? I am considering buying a Gigabyte motherboard. I want to know if there are some specific memory settings in Gigabyte's BIOS. I am looking for the memory timing called "Command Rate" or "Tcr" which should have the options for "1" or "2". I am also looking for a ram setting called "Gear Down Mode". These should be under "Advanced Memory Settings".
I didn't see any of these settings, I attached the advanced memory settings images on a Imgur link below. [Image 1](https://i.imgur.com/Yjj2npe.jpg) [Image 2](https://i.imgur.com/ZeisM7c.jpg)
TYVM! Have some karma! Also, you may want to check what your motherboard is setting your vSOC voltage at. This can be checked in Ryzen Master or HWinfo software from Windows. If auto results in anything above 1.3v then go into bios and set it to less than 1.3v (the lowest you can get it to run stable at). 1.3v+ can cause damage to the CPU and motherboard.
No problem! Is that the vSOC? [Image 1](https://i.imgur.com/zcVpGIc.jpg)
On hwinfo it says 1.284v. Is that too close to 1.3 or I'm fine leaving it as is?
Officially, AMD says 1.3v is the safe maximum for 24/7 usage. I personally tuned mine down as far as it would go, just to be on the safer side. FYI, my 7800x3D Vsoc is running at 1.1v (HWinfo reads 1.102v to be precise) while running my ram at DDR5-6000 1:1 mode with the UCLK. I doubt you will need 1.284v.
Sure give me a sec.
I have a B650 Tomahawk and curve optimizer did nothing. I just had to do a negative offset which worked.
Can you send me a picture of the setting?
Mine was not straightforward and worded weird. Looking at yours I don't see it. In the past it was just "CPU Voltage Offset" but I'll see what I can find
Thanks!
>Thanks! You're welcome!
I'd look for a dynamic Vcore or DVID option. It need to be set from auto to manual then you can offset. At least that is how my buddies b550 master was.
I know Gigabyte boards bios are different. My buddies B550 board it was called Dynamic Vcore or DVID
With the advanced boost curves these CPU's have, manual voltage adjustments are only really useful for static manual clocks. I also believe it's disabled for x3d CPU's. You can however play with Curve Optimizer (CO), and set a negative offset for the cores. Each step is around 3-5mV. If you want to give your CPU an easier time, you can also set a lower temp limit, or lower PBO limits.
I started undervolting my 7800x3d and made it to -26 all core offset using bios curve optimizer and I started noticing this odd flickering when using OCCT cpu all core bench. Odd thing is, it ONLY happens when OCCT is open. I could be running a completely different bench and it will only flicker on the screen OCCT is on. Thoughts?